Update notes:

2.50.0
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Update to WikiSpeech 2.50. requires the installation of ips.security >= 0.6.0 JAR library to Tomcat.
( On Ubuntu 20.04 go to directory /var/lib/tomcat9/lib, remove the old ips.security-0.6.0.jar file and copy ips.security-0.7.0.jar to the directory.)
Restart Tomcat.